Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f03ca3be0f5cd1…

MALICIOUS

PDF

44.2 KB Created: 2021-05-14 19:02:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b9a67afaaf6b7e1365a24000dba14946 SHA-1: a1d3ef8200191b35faec0979956aec159dc6b655 SHA-256: 29f03ca3be0f5cd17a6bc669b9df2d848fd720169538f94a32d16c03ff79c7e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one to 'netcdn.xyz', which are likely intended to redirect users to malicious websites for phishing or malware distribution. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-15-free-spin-link-today-game-hack In PDF document text
    • http://www.ocic.hr/files/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/wurst-112_GM479516143.pdfIn PDF document text
    • http://www.ocic.hr/files/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/oginject-co_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004774.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4774 24344 bytes
SHA-256: 053e848b457c3c21b92614c85cb847e0cf3c781448bf600a0429db08f0b9c367
font_01_sfnt_off00007f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F51 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8903 18652 bytes
SHA-256: 5b53a5b683b77cc6f0f815c556bf9926b59998be6e817bd3b756384118128b65

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